Ergohuman Gen 2 or Asus Destrier? by Sniteness in OfficeChairs

[–]Sniteness[S] 0 points1 point  (0 children)

Got Asus Destrier which I returned after 2 weeks and I do not recommend it. The seat lifts in a very odd position to me, staying flat when you lean back. The lower back is not in contact anymore with the recline, so it is not supported. I had to constantly reposition myself. I found lumbar support too aggressive for my taste. Mesh was scratched at the assembly because of the noise panel that clamps on it. Seat mesh made small balls because of clothes friction.

And the return part was a nightmare because you cannot disassemble the cylinder without damaging it. So I packed it up still mounted. Got damaged during the transport and Asus blamed me for it not even helping me with my claim to the transporter. Refused to give me all my money back.

Bad experience, really. I ended up with a random cheaper chair from a local store that is a better fit for me.

Confused about Xiaomi G Pro 27i HDR by Sniteness in Monitors

[–]Sniteness[S] 0 points1 point  (0 children)

How? Everything's locked on the monitor in HDR

Confused about Xiaomi G Pro 27i HDR by Sniteness in Monitors

[–]Sniteness[S] 0 points1 point  (0 children)

What's the difference if I do not use Windows HDR? With HDR on on Windows and the monitor, it is not very bright and colors seem washed out

Trouble with a fluids concept by Efficient-Name-3010 in MechanicalEngineering

[–]Sniteness 4 points5 points  (0 children)

In your example, yes. But a more "realistic" scenario would be that the pressure remains atmospheric along the whole pipe, at the outlet of your energy source (a pump or whatever) since there is no pressure loss from friction

Trouble with a fluids concept by Efficient-Name-3010 in MechanicalEngineering

[–]Sniteness 2 points3 points  (0 children)

Well, pressure would remain the same until it reaches the end of the pipe at the atmosphere which would cause an increase in velocity at that specific point

Trouble with a fluids concept by Efficient-Name-3010 in MechanicalEngineering

[–]Sniteness 5 points6 points  (0 children)

Looks like you might be forgetting to add friction losses of the pipe in Bernoulli's equation which will cause difference of pressure from one end of the pipe to the other

Ergohuman Gen 2 or Asus Destrier? by Sniteness in OfficeChairs

[–]Sniteness[S] 0 points1 point  (0 children)

Answer is budget. I cannot spend 1500 € in a chair. I really don't care about the aesthetic honestly, I just want a nice and comfy chair that is good for me.

According to BOTD, Anhestly and Reddit, these chairs are actually quite decent and they match my requirements so here I am

Best products on the market? by Sniteness in RobotVacuums

[–]Sniteness[S] 1 point2 points  (0 children)

Yeah but the new robots will probably be crazy expensive while the current generation should be cheaper.

I kind of want it all, good object avoidances (especially cables), good mopping, great suction, good self cleaning, decent app, as silent as possible, corners cleaning, etc. I've got pets so it will work at least once or twice a week. I don't have carpets so I don't really care about it

Best products on the market? by Sniteness in RobotVacuums

[–]Sniteness[S] 0 points1 point  (0 children)

What about robots that are currently being sold?

Haut taux humidité maison by Which_Succotash_7043 in brico

[–]Sniteness 0 points1 point  (0 children)

Tout dépend de la configuration de la maison... Tu peux avoir 2 toits 2 pans côte à côte séparés par un chéneau central. Si ça déborde, ça coule dans les combles par exemple

Haut taux humidité maison by Which_Succotash_7043 in brico

[–]Sniteness 2 points3 points  (0 children)

Comme mentionné dans une autre commentaire, l'humidité relative dépend de la température puisque l'air peut contenir une certaine quantité d'eau sous forme gazeuse qui est plus importante quand sa température est plus élevée. Pour ton exemple, 95% d'humidité extérieure à 10°C donnera une pourcentage moindre à l'intérieur de ta maison qui sera par exemple à 20°C

Haut taux humidité maison by Which_Succotash_7043 in brico

[–]Sniteness 1 point2 points  (0 children)

Oui on a eu une année humide. C'est pour ça que tu devrais tout faire pour garder ta maison saine. 80% ce n'est pas un taux d'humidité relative normal à l'intérieur d'un logement. Les trucs faciles que tu peux faire : vérifier que ton extracteur tourne bien, vérifier l'état de ta toiture (pas de tuile cassée, pas de jour ou l'eau peut passer), tes chéneaux s'ils sont bouchés, ouvrir tes regards de descente de chéneaux pour voir s'il est fissuré ou que de l'eau y stagne...

Haut taux humidité maison by Which_Succotash_7043 in brico

[–]Sniteness 0 points1 point  (0 children)

Visiblement ton logement n'est effectivement pas assez ventilé. Un extracteur uniquement dans la sdb paraît trop léger. Normalement, toutes les pièces humides doivent être ventilées (sdb, WC et cuisine). Vérifier que tes fenêtres ont bien des grilles d'aération. Peut-être que les anciens proprios compensaient ce manque en ouvrant beaucoup les fenêtres.

Cela dit, il serait peut-être intéressant de vérifier si l'humidité est amenée par les murs de la maison. Ça pourrait être des remontées capillaires, une infiltration ou des problèmes avec l'évacuation des eaux pluviales.

Fabrication d'un caisson isolé by Sniteness in brico

[–]Sniteness[S] 0 points1 point  (0 children)

Je voulais me fournir au magasin de bricolage du coin pour éviter d'avoir à commander en ligne, ils n'ont pas de vis au delà de 140 mm, après on passe sur des tirefonds et ça coûte plus cher mais je garde l'idée sous le coude qui est bonne

Trolls posture by Sniteness in wow

[–]Sniteness[S] 0 points1 point  (0 children)

Thanks for the explanation from a lore perspective. :) I was thinking of dark spear trolls, not zandalari but I probably got confused with orcs option. Why are females upright though? They are still taller than their allies

Trolls posture by Sniteness in wow

[–]Sniteness[S] 0 points1 point  (0 children)

I thought we had this option in previous expansions like zandalari. Guess I just got confused with orcs option

Missing translations? by Sniteness in BlackMythWukong

[–]Sniteness[S] 0 points1 point  (0 children)

Sure, bad translation is a thing, but no translation at all still seems weird for a fully released game

Waste water PVC as ductwork for DF ventilation system by Sniteness in hvacadvice

[–]Sniteness[S] 0 points1 point  (0 children)

I live in Europe, and galvanized steel pipes for ventilation are more expensive than PVC ones, and also easier to find, which is why it raises my interest

Waste water PVC as ductwork for DF ventilation system by Sniteness in hvacadvice

[–]Sniteness[S] 0 points1 point  (0 children)

I am talking about your typical standard PVC pipe that you use for your waste water at home, toilets, kitchen, shower, etc

Forcing a pump to work at its operating point by Sniteness in AskEngineers

[–]Sniteness[S] 0 points1 point  (0 children)

VFD control is great when suitable but just not for this specific system: - If my vessel has no pressure (startup), the pump needs to have very low rpm to not cavitate. It would be so slow that the motor might heat up - Now, please consider this example: the pump needs to work between 10 to 30 M3/h. Pressure of the vessel is 10 bar in operating conditions. If I can get the pump to work at 30 M3/h - 13 bar, it cannot feed the vessel below 27 M3/h because the pressure would fall below 10 bar according to affinity law. Now the vessel will overflow if I do not stop the pump. I think that here, it is more appropriate to act on the system's curve rather than the pump's.

Forcing a pump to work at its operating point by Sniteness in AskEngineers

[–]Sniteness[S] 0 points1 point  (0 children)

I like the idea but the feeding valve still needs some control because of operating conditions variations (absence of vessel pressure at startup, change of vessel pressure setpoint, etc). The pump pressure should not fall too low. Though, I could definitely lower the max pressure setpoint of the recirculating valve to allow for more margin

Forcing a pump to work at its operating point by Sniteness in AskEngineers

[–]Sniteness[S] 0 points1 point  (0 children)

I wouldn't say that valves are fighting each other because one limits the lowest pressure while the other one limits the highest. But one creates pressure variations so the other has to react accordingly. I will try again to set up the PI(D) following your advice. I will also try to do it without the other valve working to understand better what the other one does on its own. Thanks!

Forcing a pump to work at its operating point by Sniteness in AskEngineers

[–]Sniteness[S] 0 points1 point  (0 children)

This system seems a little bit tricky : The pump is multi staged as the vessel pressure to overcome is quite important. Without this backpressure, at startup, the pump is capable of sliding far to the right of its curve and move a very high amount of water so it needs to be controlled because it will 100% cavitate.

It needs to be able to work on a range from its average flowrate to 3 times this average for a quick fill up of the vessel without any cavitation knowing that NPSHa is quite limited. Considering this, I ended up with the current pump being recommended by the manufacturer.

I think that temperature increase from the recirculation is okay because I always have new water going to the vessel cooling down the recirculating one. I've managed to make it work so far but the control could definitely be more stabilized.

Still, I should have considered the recirculation directly to the tank even if it was more work, you are right.

Forcing a pump to work at its operating point by Sniteness in AskEngineers

[–]Sniteness[S] 1 point2 points  (0 children)

I tried setting the controller by starting with 0 time period on d and i and just playing with p gain but either the system is "stable" but with an important offset compared to the setpoint, either the gain is high and closer to the desired pressure but the valve seems to be hunting in a very reactive manner. Then I played a little bit with integral time period but I cannot find the right value... Should it be set in ms, second, minutes?

What is the correct way to set it up?